6.1 Physical and Chemical Changes
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1. How are physical and chemical changes identified?
Physical changes do not result in the formation of new chemical substances and are often easily reversible, while chemical changes involve the formation of one or more new substances and are usually more difficult to reverse.
2. What are the primary differences between physical and chemical changes?
A physical change involves a change in state or form without changing the chemical identity of the substance, whereas a chemical change involves a rearrangement of atoms to create new products with different properties.